ML20085E598

LER ER-76-004:on 760221,MSIV Closure Setpoint Found Below Tech Spec Limits,On PIC 0751D & PIC 0752A.Caused by Setpoint Drift.Setpoint Adjusted

ML20085E598
Person / Time
Site:	Palisades
Issue date:	03/10/1976
From:	Bixel D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20085E599	List: ML20085E598 ML20085E601
References
LER-ER-76-004, LER-ER-76-4, NUDOCS 8308150427
Download: ML20085E598 (2)

Text

- - - - -

Q V pJ i

~

4 CDDSumSTS Q ()  ; POWBT i , Campany General OMices: 212 West M6chsgen Avenue, Jackson, M:chigan 49201

• Area Code 517 788 0550 March 10, 1976

.b\

~

I'?A.9  % D Mr James G. Keppler $ t'.s.,,

)*l;O lS/g

- 4 A

Office of Inspection Enforcement ,1 7% -

Region III ci-

'YN US Nuclear Regulatory Cor:: mission ,

Q) 799 Roosevelt Road .

N Glen Ellyn, IL 60137 DOCKET 50-255, LICENSE DPR-20 PALISADES PLANT, ER-76-Oh

'3 MSIV CLOSING PRESSURE INSTRUlEITATION Attached is a reportable occurrence which relates to the Palisades Plant.

This occurrence has been classified as a reactor protection system or engineered safety feature instrument setting which was found to be less conservative than those established by the Technical Specifications but which do not prevent the fulfillment of the functional requirements of the affected system.

David A. Bixel Assistant Nuclear Licensing Administrator .

I 8308150427 760310 PDR ADOCK 05000255 S PDR 1

2626 vi n, - - -

l L

gCENSEE EVENT REPORT (] -

COurnOt stOCx:l l l l l l l casass amar au. nseuman manuarmar 1 8 i UCENSE NUMBER l0 l 0 l-l 0 l0 l 0 l 0 l 0l-l0 l 0 l l hl 1l 1l1 l1 l

"' 01 l Ml IlP l A l Ll 1l l 0l 3l l 7 89 14 15 25 28 30 31 32 YPE SOUE C,0CKET NUMBER EVENT OATE REPORT DATE 01COwTI I I LL_1 LL_I l o I s i ol-lo 12 I 5 I s i 10 l a t a l 117 16 l 101si11017Is1 7 3 57 58 59 80 81 88 69 74 75 OO EVENT DESCRIPTION HE lDuring testing, the MSIV closure set ooint was found to be below the Technical l 7 89 80 35 lSrecifications 11rit of "c-esta. + w con m4," on two instruments. PIC 0751D was l k 80 7 89 3[ lfound set at h95 usia and PIC 0752A vas found at h00 nsia." 80 l

7 89 gg l (ER-76-Oh) l 7 89 80 I I 7 89 psma, 80 C DE C OE COMPONENT CODE VOLATcN O

7 89 10 lClDl { 11 lIl NI SI TlR l Ul 12 17 lN l 43 44 lIlll 3l 0l 47 W48 CAUSE DESCRIPTION O l Instrument set point drift. Set point was ad, justed. International Instrument l 7 89 80 gg lModel No 9223-E l 7 89 80 DE I I

sia  % POWER OTHER STATUS O COVE DISCOVERY OESCRIPTON 1

7 8 9 Ld 10101 01 I 10 12 13 nr I 44 bJ 45 l

48 u

80 I

EE OF SE AMOUNT OF ACTMTV LOCATON OF RELEASE

@ IZl LZ I I NA l l NA l 7 8 9 10_ 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTCN DE lo 10 l 01 lZJ l NA .l 7 89 11 12 13 80 PERSONNEL INJURIES NUMBER DESCRIPTON E l0l0l0l11 12l 7 89 NA l 80-PROBABLE CONSEQUENCES l 1 lSince other set toints were satisfactory, troter initiation vould have occurred. l l

7 89 80 l LOSS OR OAMAGE TO FACILITY TYPE OESCReToN MA l 7 89 10 80 PUBUCITY E l NA l 7 89 80 ADDITIONAL FACTORS DE l NA l 7 89 80 l

l DE l l 7 89 80

. _ _ ._ _ ._ - _ - _ . . _ _